CN203180831U - Front stereophonic amplifier - Google Patents
Front stereophonic amplifier Download PDFInfo
- Publication number
- CN203180831U CN203180831U CN 201320121360 CN201320121360U CN203180831U CN 203180831 U CN203180831 U CN 203180831U CN 201320121360 CN201320121360 CN 201320121360 CN 201320121360 U CN201320121360 U CN 201320121360U CN 203180831 U CN203180831 U CN 203180831U
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- electric capacity
- resistance
- capacitor
- potentiometer
- amplifier
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Abstract
The utility model discloses a front stereophonic amplifier which comprises a first amplifier, a second amplifier, a first potentiometer, a second potentiometer, a third potentiometer, a fourth potentiometer, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor and a sixteenth capacitor. A signal input end is respectively connected with the first end of the sixteenth capacitor and the first end of the first resistor. The front stereophonic amplifier is high in reliability, good in effect and energy-saving.
Description
Technical field
The utility model relates to a kind of amplifier, relates in particular to a kind of stereo preamplifier.
Background technology
Audio power amplifying apparatus generally comprises preposition audio process and output-stage power amplifier two parts, and the audio signal input is amplified by preposition audio process, delivers to the output-stage power amplifier again and drives the loud speaker playback.Now the audio frequency power amplifier application is more and more wider, and the stage power amplifier arrive the square power amplifier greatly to family's power amplifier, little arrive at one's side with portable product such as MP3, MP4 etc. can both see the existence of audio frequency power amplifier everywhere; Develop into present transistor from electron tube; entered digital Age again now; present digital power amplifier is the CLASS-D power amplifier; can be still less than transistorized power amplifier aspect tone color and definition; and; present CLASS one D power amplifier; be made in the advantage that truly has it in the portable product; energy-conservation; effective; characteristics such as volume is little; but the tone color of CLASS-D power amplifier in large-scale professional power amplifier; how definition and explosive force aspect make the audio frequency power amplifier of simulation class do more perfectly all not as good as transistor AB type; better effects if; protection is the target that designers pursue always more comprehensively.
The utility model content
The purpose of this utility model just is to provide in order to address the above problem a kind of reliability height, effective and energy-conservation stereo preamplifier.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of stereo preamplifier, comprise first amplifier, second amplifier, first potentiometer, second potentiometer, the 3rd potentiometer, the 4th potentiometer, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 11 electric capacity, the 12 electric capacity, the 13 electric capacity, the 14 electric capacity, the 15 electric capacity and the 16 electric capacity, signal input part is connected with first end of described the 16 electric capacity and first end of described first resistance respectively, the second end ground connection of described first resistance, second end of described the 16 electric capacity is connected with the in-phase input end of described first amplifier, described first amplifier's inverting input is connected with first end of described first electric capacity, the cathode output end ground connection of described first amplifier, the cathode output end of described first amplifier is connected with first end of described the 7th electric capacity and first end of described the 5th resistance respectively, the second end ground connection of described the 7th electric capacity, the signal output part of described first amplifier is connected with first end of described the 3rd electric capacity and first end of described the 4th electric capacity respectively, second end of described the 3rd electric capacity is connected with first end of described the 3rd resistance and first end of described second electric capacity respectively, second end of described second electric capacity respectively with second end of described the 3rd resistance, second end of described first electric capacity is connected with first end of described second resistance, the second end ground connection of described second resistance, second end of described the 4th electric capacity is connected with first end of described the 4th resistance and first end of described the 8th electric capacity respectively, second end of described the 4th resistance is connected with first end of described the 5th electric capacity and first end of described first potentiometer respectively, second end of described the 5th electric capacity respectively with the sliding end of described first potentiometer, the sliding end of described second potentiometer, first end of described the 6th electric capacity, first end of described the tenth electric capacity is connected with first end of described the 3rd potentiometer, second end of described first potentiometer is connected with second end of described the 6th electric capacity and first end of described the tenth resistance respectively, the second end ground connection of described the tenth resistance, second end of described the 8th electric capacity is connected with first end of described second potentiometer, second end of described second potentiometer is connected with first end of described the 9th electric capacity, the second end ground connection of described the 9th electric capacity, second end of described the tenth electric capacity is connected with first end of described the 11 electric capacity and second end of described the 3rd potentiometer respectively, second end of described the 11 resistance is connected with first end of described the 6th resistance, the second end ground connection of described the 6th resistance, the 3rd end ground connection of described the 3rd potentiometer, the sliding end of described the 3rd potentiometer is connected with first end of described the 12 electric capacity, second end of described the 12 electric capacity is connected with the in-phase input end of described second amplifier, the cathode output end of described second amplifier is connected with second end of described the 5th resistance, second end of described the 5th resistance is first signal output part, described second amplifier's inverting input is connected with first end of described the 13 electric capacity, second end of described the 13 electric capacity respectively with first end of described the 7th resistance, first end of described the 8th resistance and first end of described the 14 electric capacity are connected, second end of described the 7th resistance is connected with first end of described the 4th potentiometer, the sliding end ground connection of described the 4th potentiometer, second end of described the 4th potentiometer is connected with first end of described the 9th resistance, second end of described the 9th resistance is the secondary signal output, the signal output part of described second amplifier is connected with first end of described the 15 electric capacity, second end of described the 15 electric capacity is the 3rd signal output part, and second end of described the 15 electric capacity is connected with second end of described the 14 electric capacity and second end of described the 8th resistance respectively.
The beneficial effects of the utility model are:
The reliability height of a kind of stereo preamplifier of the utility model, effective and energy-conservation.
Description of drawings
Fig. 1 is the circuit structure diagram of a kind of stereo preamplifier of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of stereo preamplifier of the utility model, comprise the first amplifier U1, the second amplifier U2, the first potentiometer RP1, the second potentiometer RP2, the 3rd potentiometer RP3, the 4th potentiometer RP4, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, the 8th capacitor C 8, the 9th capacitor C 9, the tenth capacitor C 10, the 11 capacitor C 11, the 12 capacitor C 12, the 13 capacitor C 13, the 14 capacitor C 14, the 15 capacitor C 15 and the 16 capacitor C 16, signal input part is connected with first end of the 16 capacitor C 16 and first end of first resistance R 1 respectively, the second end ground connection of first resistance R 1, second end of the 16 capacitor C 16 is connected with the in-phase input end of the first amplifier U1, the inverting input of the first amplifier U1 is connected with first end of first capacitor C 1, the cathode output end ground connection of the first amplifier U1, the cathode output end of the first amplifier U1 is connected with first end of the 7th capacitor C 7 and first end of the 5th resistance R 5 respectively, the second end ground connection of the 7th capacitor C 7, the signal output part of the first amplifier U1 is connected with first end of the 3rd capacitor C 3 and first end of the 4th capacitor C 4 respectively, second end of the 3rd capacitor C 3 is connected with first end of the 3rd resistance R 3 and first end of second capacitor C 2 respectively, second end of second capacitor C 2 respectively with second end of the 3rd resistance R 3, second end of first capacitor C 1 is connected with first end of second resistance R 2, the second end ground connection of second resistance R 2, second end of the 4th capacitor C 4 is connected with first end of the 4th resistance R 4 and first end of the 8th capacitor C 8 respectively, second end of the 4th resistance R 4 is connected with first end of the 5th capacitor C 5 and first end of the first potentiometer RP1 respectively, second end of the 5th capacitor C 5 respectively with the sliding end of the first potentiometer RP1, the sliding end of the second potentiometer RP2, first end of the 6th capacitor C 6, first end of the tenth capacitor C 10 is connected with first end of the 3rd potentiometer RP3, second end of the first potentiometer RP1 is connected with second end of the 6th capacitor C 6 and first end of the tenth resistance R 10 respectively, the second end ground connection of the tenth resistance R 10, second end of the 8th capacitor C 8 is connected with first end of the second potentiometer RP2, second end of the second potentiometer RP2 is connected with first end of the 9th capacitor C 9, the second end ground connection of the 9th capacitor C 9, second end of the tenth capacitor C 10 is connected with first end of the 11 capacitor C 11 and second end of the 3rd potentiometer RP3 respectively, second end of the 11 resistance R 11 is connected with first end of the 6th resistance R 6, the second end ground connection of the 6th resistance R 6, the 3rd end ground connection of the 3rd potentiometer RP3, the sliding end of the 3rd potentiometer RP3 is connected with first end of the 12 capacitor C 12, second end of the 12 capacitor C 12 is connected with the in-phase input end of the second amplifier U2, the cathode output end of the second amplifier U2 is connected with second end of the 5th resistance R 5, second end of the 5th resistance R 5 is first signal output part, the inverting input of the second amplifier U2 is connected with first end of the 13 capacitor C 13, second end of the 13 capacitor C 13 respectively with first end of the 7th resistance R 7, first end of the 8th resistance R 8 is connected with first end of the 14 capacitor C 14, second end of the 7th resistance R 7 is connected with the 4th potentiometer RP4 first end, the sliding end ground connection of the 4th potentiometer RP4, second end of the 4th potentiometer RP4 is connected with first end of the 9th resistance R 9, second end of the 9th resistance R 9 is the secondary signal output, the signal output part of the second amplifier U2 is connected with first end of the 15 capacitor C 15, second end of the 15 capacitor C 15 is the 3rd signal output part, and second end of the 15 capacitor C 15 is connected with second end of the 14 capacitor C 14 and second end of the 8th resistance R 8 respectively.
Claims (1)
1. stereo preamplifier, it is characterized in that: comprise first amplifier, second amplifier, first potentiometer, second potentiometer, the 3rd potentiometer, the 4th potentiometer, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 11 electric capacity, the 12 electric capacity, the 13 electric capacity, the 14 electric capacity, the 15 electric capacity and the 16 electric capacity, signal input part is connected with first end of described the 16 electric capacity and first end of described first resistance respectively, the second end ground connection of described first resistance, second end of described the 16 electric capacity is connected with the in-phase input end of described first amplifier, described first amplifier's inverting input is connected with first end of described first electric capacity, the cathode output end ground connection of described first amplifier, the cathode output end of described first amplifier is connected with first end of described the 7th electric capacity and first end of described the 5th resistance respectively, the second end ground connection of described the 7th electric capacity, the signal output part of described first amplifier is connected with first end of described the 3rd electric capacity and first end of described the 4th electric capacity respectively, second end of described the 3rd electric capacity is connected with first end of described the 3rd resistance and first end of described second electric capacity respectively, second end of described second electric capacity respectively with second end of described the 3rd resistance, second end of described first electric capacity is connected with first end of described second resistance, the second end ground connection of described second resistance, second end of described the 4th electric capacity is connected with first end of described the 4th resistance and first end of described the 8th electric capacity respectively, second end of described the 4th resistance is connected with first end of described the 5th electric capacity and first end of described first potentiometer respectively, second end of described the 5th electric capacity respectively with the sliding end of described first potentiometer, the sliding end of described second potentiometer, first end of described the 6th electric capacity, first end of described the tenth electric capacity is connected with first end of described the 3rd potentiometer, second end of described first potentiometer is connected with second end of described the 6th electric capacity and first end of described the tenth resistance respectively, the second end ground connection of described the tenth resistance, second end of described the 8th electric capacity is connected with first end of described second potentiometer, second end of described second potentiometer is connected with first end of described the 9th electric capacity, the second end ground connection of described the 9th electric capacity, second end of described the tenth electric capacity is connected with first end of described the 11 electric capacity and second end of described the 3rd potentiometer respectively, second end of described the 11 resistance is connected with first end of described the 6th resistance, the second end ground connection of described the 6th resistance, the 3rd end ground connection of described the 3rd potentiometer, the sliding end of described the 3rd potentiometer is connected with first end of described the 12 electric capacity, second end of described the 12 electric capacity is connected with the in-phase input end of described second amplifier, the cathode output end of described second amplifier is connected with second end of described the 5th resistance, second end of described the 5th resistance is first signal output part, described second amplifier's inverting input is connected with first end of described the 13 electric capacity, second end of described the 13 electric capacity respectively with first end of described the 7th resistance, first end of described the 8th resistance and first end of described the 14 electric capacity are connected, second end of described the 7th resistance is connected with first end of described the 4th potentiometer, the sliding end ground connection of described the 4th potentiometer, second end of described the 4th potentiometer is connected with first end of described the 9th resistance, second end of described the 9th resistance is the secondary signal output, the signal output part of described second amplifier is connected with first end of described the 15 electric capacity, second end of described the 15 electric capacity is the 3rd signal output part, and second end of described the 15 electric capacity is connected with second end of described the 14 electric capacity and second end of described the 8th resistance respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121360 CN203180831U (en) | 2013-03-18 | 2013-03-18 | Front stereophonic amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121360 CN203180831U (en) | 2013-03-18 | 2013-03-18 | Front stereophonic amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180831U true CN203180831U (en) | 2013-09-04 |
Family
ID=49077485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121360 Expired - Fee Related CN203180831U (en) | 2013-03-18 | 2013-03-18 | Front stereophonic amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203180831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151994A (en) * | 2013-03-18 | 2013-06-12 | 成都龙腾中远信息技术有限公司 | Stereo preamplifier |
-
2013
- 2013-03-18 CN CN 201320121360 patent/CN203180831U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151994A (en) * | 2013-03-18 | 2013-06-12 | 成都龙腾中远信息技术有限公司 | Stereo preamplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140318 |